Sda5275; Features; Pin Definition And Functions - Toshiba 29VH27E Service Manual

WP
This pin must be connected to either V
(read/write the entire memory 000-FFF). If tied to V
memory will be write-protected. Read operations are not affected.
W
CC
+2.5V to 6V Power Supply
W
SS
Ground

14.4.SDA5275

14.4.1.Features

• Single chip teletext IC
• Analog CVBS-input with onchip clamping circuitry
• Slicer
• Supports level 1, 2.5 and 3.5 ETSI teletext standard
• Stores up to 14 teletext pages on chip
• Stores up to 2048 teletext pages with external 16 M memory
• SDA 5275: full level 2.5 processing
• Analog RGB-output
• 41 Latin script languages
• 12 ´ 10 character size
• Parallel display attributes
• 64 from 4096 colors selectable
• Enhanced flash modes
• Dynamically redefinable character set (DRCS, PCS)
• Pixel graphics
• Full screen display (64 ´ 32 or 80 ´ 24 character positions)
• Horizontal and vertical scrolling
• Graphic cursors
• 4:3 and 16:9 display
• Multinorm display (50/60/100/120 Hz)
• RISC-processor
• Firmware downloadable
2
• I C / 3 wire UART-interface (1 Mbit/s)
• Independent clocks for acquisition and display
• Tools for greatly simplified software development
• 24-Kbyte on-chip reconfigurable DRAM
• 44160-bit character ROM
• One external crystal for all standards

14.4.2.Pin Definition and functions

Pin No. P-LCC-68-1 Symbol
1 INTQ
2 CLK-IO
3 TCSQ/FLD
4 VS/VCS
5 HS
6 XOUT
7 XIN
8 GPO
9 TM
10 CVBS
11 V
12 V
13 V
14 N.C.
15 N.C.
16 V
17 RES
18 N.C.
or V
SS
Function
Interrupt request output to ext. controller
System clock input/output
Composite sync output/ field output
Vertical sync input/output
Horizontal sync input/output
20.5-MHz crystal oscillator output
20.5-MHz crystal oscillator input
General purpose output
Test pin, leave open or connect VSS
CVBS-video signal input
+ 5 V digital supply
DD1
+ 5 V analog supply
DDA
Analog ground
SSA1
Not connected
Not connected
+ 5 V digital supply
DD2
Chip reset
Not connected
. If tied to V , normal memory operation is enabled
CC SS
, WRITE operations are inhibited. The entire
CC
8